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  1. eCQM Issue Tracker
  2. CQM-4752

Difference between dates containing leap year

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    • Icon: EH/CAH eCQMs - Eligible Hospitals/Critical Access Hospitals EH/CAH eCQMs - Eligible Hospitals/Critical Access Hospitals
    • Resolution: Answered
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    • Auryl Glenna Machado
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      Thank you for your question. Because 2021 is not a leap year, the leap year logic is not pertinent to the dates provided in your inquiry (IP Start Date - 2020-12-31 -IP End Date - 2021-05-01). However, the length of stay day calculation considers leap year (29 in February) in the calculation when applicable. Therefore, during a leap year, the difference in days expression will count February 29, (e.g., 2020-02-29) in the calculation.
      Show
      Thank you for your question. Because 2021 is not a leap year, the leap year logic is not pertinent to the dates provided in your inquiry (IP Start Date - 2020-12-31 -IP End Date - 2021-05-01). However, the length of stay day calculation considers leap year (29 in February) in the calculation when applicable. Therefore, during a leap year, the difference in days expression will count February 29, (e.g., 2020-02-29) in the calculation.
    • CMS0009v10

      Hi,

      We were testing a scenario for the below criteria in CMS 9 measure for data in 2021 reporting year.

      Single Live Term Newborn Encounter With Length of Stay More Than 120 days

      • PCNewborn."Single Live Term Newborn Encounter During Measurement Period" QualifyingEncounter
        where Global."LengthInDays" ( QualifyingEncounter.relevantPeriod ) > 120

      Below are the dates we have provided for the Encounter Visit having 121 days.

      IP Start Date - 2020-12-31

      IP End Date - 2021-05-01

       

      We would like to know how the leap years are being considered in eCQM evaluation, particularly in the DifferenceBetween operator. 

       

      Thanks,

      Auryl

       

       

            JLeflore Joelencia Leflore
            Auryl Auryl Machado
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